Cotton gin



Nov. 10, 1931. F. B WILLIAMS COTTON GIN Filed Oct. 1'7, 1927 INVENTOR.

F B WILLIANIS BY 00 A TTORNEY Patented Nov. 10, 193i UNITED ST ES ATENT OFFICE FRENCH B. WILLIAMS, 0F FORT WORTH, TEXAS, AS STGNOR, BY DIRECT AND MESH ASSIGNMENTS, OI: FIVE-FORT'IETH-S TO J. H. CLARK, 'FIVE-F'ORTIETHS TO A. P. BARKER, FOUR-FORTIETHS 130 H. T. IPANGBURN, AND TWENTY-FORTIET-H-S 1 0 C.

PBESSLEY, ALL OF FORT W ORTH, TEXAS COTTON GIN Application filed. October 17, 1927. Serial No. 226,616.

My invention relates to cotton gins and,

fire hazard is reduced by preventing friction of the saws and ribs against the cotton. It

has been discovered that the cause of fire in many instances is the friction of the cotton andsaws and the particular location ofthe trouble is the cottonthat becomes hung on the ribs and bears against'the saws on the under sides of the ribs, that isaft'er the saws pass through the ribs, the saws rub against the cotton that is clinging to the ribs and this is where the fire originates. The object is to provide revolving ribs that will throw the cotton roll back away from the points where the saws pass through the stationary ribs and to change the shapes of the stationary ribs to co-operate with the revolving ribs. Other objects and advantages will be fully explained in the following description and the invention will be more particularly pointed out in the claims. 7

Reference is had to the accompanying drawings which form a part of this application.

Fig. 1 is a vertical section of agin stand, showing the disposition of the revolving ribs and the stationary ribs.

Fig. 2 is a front elevation of the revolving ribs in part on an enlarged scale, also showing the position of the stationary ribs relative to the revolving ribs.

Fig. 3 is a side elevation of one of the stationary ribs.

Similar characters of reference are used to indicate the same parts throughout the several views. 3

A gin stand of ordinary type is shown in the drawings provided with the improve ments andsaws and a brush drum. The gin has the usual roll box '1, saws 2,, and brush drum 3, and other parts not necessary -to be described inthis application. The gin stand has saw shaft 4 for the saws 2. tionary ribs 5 are attached at-their lower ends to the frame member 6. At their upper ends the ribs are attached to the rear of the frame member 7 instead of the front. The ribs 5 are spaced apart fol-the passage of the saws "2 1n the usual manner.

arcuated d1v1der8 which is curved slightly to Each rib 5 has an conform approximately-to'the curvature of the roll box for the purpose of aiding in keeping the roll of cotton intact. From the points the ribs have members 9curved downwardly and then upwardly and attached to the frame member 7, the object'bein'g to position the parts of the ribs through which :the sawteethpass as far as possible from the'roll of cotton. Another object is to provide a space for mounting the revolving ribs 10 which are r1g1d with a shaft 11. Thesaws Qand the revolving ribs '10 revolve in the directions indicated by arrow heads. The

function of the revolving ribs 10 is to brush the cotton away from that portion of the ribs 9 "through which the saws pass and to keep the unginned cotton pushed or pressed into the cotton roll which is revolving in the roll box. The unginned cotton is thus kept away from the saw passage through the ribs 9 so-that nothingbutlint cotton will be carried by the saws through theribs 9. The objecti's to preventthe clogging of thepa'ssa'ge through the ribs with seed cotton andseed and parts of branches ofcotton stalks and to I on the s'haftt. The seed separating means 14 are of the usual type and need not be described herein.

The stationary ribs '9 and the revolving ribs,wheniarrangedas above set forth, per- The staand cooperating with said revolving ribs to space the point of passage of the saws between said stationary ribs away from the roll formed in the roll box.

2. In a cotton gin provided with a gang of saws and a roll box; stationary ribs and revolving ribs positioned above said saws and backwardly of said roll box and projecting between said saws, said revolving ribs serving to brush unginned cotton away from said stationary ribs prior to the passage of the saw teeth between said stationary ribs.

3. In a cotton gin provided with a gang of saws and a roll box; stationary ribs and revolving ribs positioned above said saws and backwardly of said roll box and projecting between said saws, said stationary ribs having arcuate members projecting partly in front of said revolving members and 00-013- erating with said revolving members for causing unginned cotton to cling to the roll of cotton in said roll box until it is ginned.

4. In a cotton gin provided with a gang of saws and a roll box; stationary ribs projecting between said saws andrevolving ribs positioned above said saws and baclrwardly of said roll box and projecting between said saws, arcuate members formed on said stationary members and co-operating with said revolving ribs to cause the unginned cotton to cling to the roll of cotton in said roll box until it is ginned and said stationary ribs being curvedpartly about said revolving ribs for spacing the point of passage of the saw teeth through the stationary ribs away from the roll of unginnedcotton. V

5. In a cotton gin the combination with a frame, of a series of rotary saws journaled in said frame, a series of rotary ribs revolving between said saws and journaled in said 7 frame above said saws, a portion of each of said ribs projecting downwardly below the periphery of one of said saws adjacent thereto, a stationary rib between successive saws having its upper and lower ends supported on said frame respectivelyabove and below said saws at points substantially diametrically opposite, each of said stationary ribs having a curved lower portion conforming substantially to the curved edge of said saw and having a curved upper portion in the same plane with and concentric with each of said rotary ribs, said curved upper portion being spaced from but adjacent to substantially half of the periphery of each of said rotary ribs including that portion of theperiphery of said rotary rib projecting down- Wardly below the periphery of said saw adj acent thereto.

6. In a cotton gin, the combination with aframe, of a series of rotary saws journaled in said frame, a series of rotary ribs revolving between portions of said saws and journaled in said frame above said saws, a portion of each of said ribs projecting downwardly lower than the peripheries of two of said'saws adjacent thereto, a stationary rib between successive saws having its upper and lower ends supported on said frame respectively above and below said saws at points substantially diametrically opposite, each of said stationary ribs having a curved lower portion conforming substantially to the curved edges of two of said saws adjacent thereto and having a curved upper portion in the same plane with and concentric with each of said rotary ribs, said curved upper portion, being spaced from but adjacent to substantially half of the periphery of the cooperating rotary rib adjacent thereto ineluding that portion of the periphery of said rotary rib projecting downwardly lower than the peripheries of two of said saws adjacent thereto.

7. In a cotton gin provided with a gang of saws'and a roll box; stationary ribs and revolving ribs projecting between said saws and positioned back of said roll box, said stationary ribs being curved under and behind said revolving ribs and cooperating with said revolving ribs to space the points where said saws leave said stationary ribs away from the rolljformed in said roll box.

In testimony whereof, I set my hand this llth'dayof October, 1927.

FRENCH B. WILLIAMS. 

